soc/qualcomm/x1p42100: Add mainboard hook for QcLib override

Introduce a weak function qclib_mainboard_override to allow
mainboards to customize QcLib policies or global attributes.
This hook is called from the SoC-specific QcLib initialization
path.

BUG=b:457566143
TEST=Configure QcLib policy for Google/Quenbi.

Change-Id: I0397b7138db260973ea86852cfa9f408e14d195d
Signed-off-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/90510
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>

src/soc/qualcomm/common/include/soc/qclib_common.h

@@ -86,6 +86,7 @@ void qclib_add_if_table_entry(const char *name, void *base,
 void qclib_load_and_run(void);
 void qclib_rerun(void);
 int  qclib_soc_override(struct qclib_cb_if_table *table);
+int  qclib_mainboard_override(struct qclib_cb_if_table *table);
 bool qclib_check_dload_mode(void);
 
 const char *qclib_file_default(enum qclib_cbfs_file file);

src/soc/qualcomm/x1p42100/qclib.c

@@ -8,6 +8,8 @@
 #include <soc/symbols_common.h>
 #include <soc/addressmap.h>
 
+__weak int qclib_mainboard_override(struct qclib_cb_if_table *table) { return 0; }
+
 bool qclib_check_dload_mode(void)
 {
 	if (!CONFIG(QC_RAMDUMP_ENABLE))
@@ -55,5 +57,11 @@ int qclib_soc_override(struct qclib_cb_if_table *table)
 
 	qclib_add_if_table_entry(QCLIB_TE_SHRM_META_SETTINGS, _qc_blob_meta, data_size, 0);
 
+	/* hook for platform specific policy configuration */
+	if (qclib_mainboard_override(table)) {
+		printk(BIOS_ERR, "qclib_mainboard_override failed\n");
+		return -1;
+	}
+
 	return 0;
 }